baber/WOPTO huggingface dataset:
Patent GB-443235-A (GB)
Title: Improvements in or relating to pigmented coating compositions
IPC: C09D7/45
Filed: 1934-08-23
Abstract: A coating-composition comprises, as vehicle, a liquid non-volatile acetylene polymer and, dispersed therein, pigment particles having a superficial protective film of one or more long chain fatty acids or long chain fatty alcohols or sulphonated fatty or sulphonated mineral oils, or soaps of such oils.  The liquid non-volatile acetylene polymers, having substantially the properties of drying oils, may be prepared by the methods disclosed in Specification 384,655. Specified pigments are silica, asbestine, barium base titanium dioxide pigment, barytes, blanc fixe, and red lead, while specified materials for the protective film are stearic, oleic, palmitic, ricinoleic, montanic, lauric, myristic, margaric and melissic acids, stearyl, lauryl, oleyl, octyl, cetyl, carnaubyl, melissyl, citronellyl, geranyl and linalyl alcohols, octadecanediol, decamethylene glycol, dibutylene glycol, monobutyl ether of glycerol, castor oil acid phthalate, stearin pitch, sulphonated fish, castor, cod, petroleum, cottonseed or coconut oil and the sodium, aluminium, lead, calcium, cobalt, manganese or barium soaps of these oils. In an example, silica pigment, asbestine, stearic acid and solvent naphtha were ball-milled together for 3 hours in an atmosphere of carbon dioxide.  Polymerized divinyl-acetylene was then added and the batch milled for a further 20 hours, in carbon dioxide.
Patent GB-881221-A (GB)
Title: Improvements in or relating to hydraulic motors for hydraulic transmission systems
IPC: F04C2/344
Filed: 1959-07-16
Abstract: 881,221. Rotary motors. PAINE, C. A. June 8, 1960 [July 16, 1959], No. 24405/59. Class 110 (2). A rotary hydraulic motor of the outwardlysliding radial vane-type comprises a ported inner easing mounted in a stator 1 having two valve-controlled inlet ports 4, 5 and an outlet port 9, the casing members defining a by-pass conduit 14 therebetween and the vanes sweeping chambers whose cross-sectional areas progressively increase from the inlet port side to the outlet port side. In a modification (see Figs. 3 and 4, not shown), the rotor is of frusto-conical form and provided with vane slots which extend obliquely to the axis of rotation of the rotor.
Patent GB-995453-A (GB)
Title: Improvements in bellows-type protective gaiters, and in the production thereof
Inventor: BLYTH JOHN ALBERT
IPC: F16J3/04
Filed: 1962-06-26
Abstract: 995,453. Seals. DAVID CALLENDER & SONS Ltd. Sept. 26, 1963 [June 26, 1962], No. 24493/62. Heading F2B. A bellows-type gaiter for containing lubricant around or protecting reciprocating shafts or other components, is produced by a method in which a series of elements 1, 2, which may be partly preformed, of a flexible thermoplastic sheet material are successively welded together to form alternate inner and outer margins 3, 4, and are simultaneously trimmed at these margins, adjacent the welds, and a cup-shaped coaxial end piece 6 moulded from flexible thermoplastic material is welded to a margin of an end elemement of the series, and a hole cut in the closed end of the cup. Various forms of end-piece are described.
Patent GB-589485-A (GB)
Title: Engine starter drive
IPC: F02N15/02
Filed: 1945-09-21
Abstract: 589,485. Engine starter drive. BENDIX AVIATION CORPORATION. Sept. 21, 1945, No. 24528. Convention date, Oct. 27, 1944. [Class 7 (v)] An engine starter drive has a driven shaft 1, a sleeve 3, with an abutment face 22, keyed to said shaft, a nut 26 with a locking nut 27 and washer 28 screwed on said sleeve for adjusting the tension of the springs 24 which act at their end on the clutch plates 19 and 20 which are keyed to the said sleeve and a barrel 16 respectively, and a coupling member 30 splined to the said barrel, held against the barrel stop ring 34 by springs 35 and secured to a screwed shaft 6, carrying the starter pinion 10, the end 7 of which is carried in the bush 5 mounted in the sleeve 3. For normal starting the pinion 10, which rests on the stop 12, moves into engagement with and turns the engine starter gear 11 through the clutch 19, 20. If tooth abutment should occur between the pinion 10 and gear 11 the shaft 6 moves to the left against the action of the springs 35 until the friction between the pinion and the screw shaft is sufficient to align the teeth, the pinion is then snapped into initial engagement by the springs 35 and the engine is then turned as before. Specification 589,472 is referred to.
Patent GB-259029-A (GB)
Title: Improvements in or relating to conical dowel and like pins
IPC: B21G3/00
Filed: 1925-10-05
Abstract: 259,029. Betterath, V., and Deutsche Werke Akt.-Ges. Oct. 5, 1925. Addition to 227,632. Bolt-like pins.-Conical dowel pins formed by pressing flats or grooves in a cylindrical pin as in the parent Specification are given a somewhat convex form longitudinally as shown in Fig. 3. They may be made by forging between dies a having tapering ribs b with a convex edge the remaining parts of the die face c corresponding in shape with the external surface of the required pin. The pins may also be formed by cylindrical rolls &c. having a profile corresponding to the required groove.
Patent GB-207914-A (GB)
Title: Improved appliances for playing floor billiards or bagatelle
IPC: A63D15/00
Filed: 1922-09-19
Abstract: 207,914. Oliver, W., and Dredge, F. Sept. 19, 1922. Outdoor games.-Appliances for playing outdoor billiards comprise a set of pneumatic cushions enclosing a surface upon which a ball may roll freely. The cushions h, Fig. 3, are held in position by pegs e and are provided with cup-shaped pockets f, Fig. 4, which are perforated for draining purposes. The material of the playing surface is preferably a mixture of sawdust, cement, sand, ashes, &c.
Patent GB-1404518-A (GB)
Title: Method of making rolled sheet for electrical purposes
IPC: C21D8/12
Filed: 1973-05-29
Abstract: 1404518 Making grain-oriented steel sheet; working at specified temperatures STAHLWERKE PEINE-SALZGITTER AG 29 May 1973 [31 May 1972] 25379/73 Heading B3A and B3V [Also in Division C7] A method of making steel sheet having isotropic magnetic properties wherein the steel contains by weight 0À1% C max, 0À07%-0À35% Mn, 0À3-2À4% Al, 0À25% Cu max, 0À05% S max, 0À02% P max, 2À0% Si max., and the balance Fe and impurities, comprises rolling the steel at 820-1080‹ C. to bring at least 5% of the number of grains in it into a (100) (h.k.l.) orientation, cold rolling with a reduction of 50-85% and recrystallization annealing at 820-1200‹ C. The steel may be normalized after hot rolling by heating for up to 15 minutes at 900-1000‹ C. The heating may be carried out in a decarburizing atmosphere and the sheet may still have scale on it. The sheet is pickled prior to cold rolling, which may be performed in two stages with an intermediate annealing step comprising heating for 10-30 minutes at 550-950‹ C. The annealing may be carried out in a reducing atmosphere to avoid subsequent pickling and after cold rolling the sheet may be finally annealed at just below the A 3 - point.
Patent GB-1160048-A (GB)
Title: Information Storage
IPC: G11C13/04
Filed: 1968-05-28
Abstract: 1,160,048. Read-only stores. INTERNATIONAL BUSINESS MACHINES CORP. 28 May, 1968 [14 July, 1967], No. 25424/68. Heading G4A. A data store uses an interference pattern, data being distinguished by bandwidth. An optical read-only store uses a Lippmann photographic plate in the thickness of which spaced reflecting layers have been established by setting up standing waves of light, developing and fixing. An electro-optical digital light deflector is used for selecting a storage position at which a 5-bit word is recorded using wide and narrow ranges of wavelengths (centred on the same wavelength) for bit-values 0 and 1 respectively, the ranges relating to different bit positions being non-overlapping in the frequency spectrum. A shutter, and rotatable disc bearing 5 x 2 bandpass filters, are used in recording. On read-out, a Fabry-Perot multibandpass filter (two spaced partially-reflecting films) passes a range of wavelengths (of light reflected from the photographic plate) at each bit position in the frequency spectrum which includes part of the " 0 " range but essentially none of the "1" range, a prism then frequencyanalysing the light on to a line of five photocells. Alternatively, for read-out, a Michelson interferometer produces interference fringes from essentially only the "1" bits, by suitable choice of the path-difference in the interferometer. The fringes are diffused by a groundglass screen and then frequency-analysed by a lens system on to a line of five photo-cells. Use of holography and Lippmann holography are mentioned as alternatives.
Patent GB-949383-A (GB)
Title: Improved manufacture of caprolactam
Inventor: DUXBURY FREDERICK KEITH
IPC: C07D201/10
Filed: 1960-07-21
Abstract: Caprolactam is manufactured by contacting hexahydrobenzoic acid or a functional derivative thereof under anhydrous conditions with a nitrosating agent in the presence of a mixture of sulphur dioxide and sulphur trioxide at a temperature below the boiling point of sulphur dioxide at the prevailing pressure and thereafter supplying heat to volatilise sulphur dioxide and to complete the reaction.  The functional derivatives of hexahydrobenzoic acid are the salts, esters, amides and nitrile. Suitable nitrosating agents are nitrosyl sulphuric acid, nitrosyl chloride, nitrosyl bromide. alkyl nitrites of the formula R.O.NO (where R is alkyl, such as ethyl, propyl, butyl or amyl), nitrous anhydride or gases containing it, and nitric oxide. The reaction is preferably carried out with the following proportions of reactants, per molecular proportion of hexahydrobenzoic acid or functional derivative thereof. 0.1 to 2.5 molecular proportions of nitrosating agent and 0.1 to 5.0 molecular proportions of sulphur trioxide, with 1 to 20 parts by weight of sulphur dioxide per part of sulphur trioxide. Typically (Example 1) a solution of hexahydrobenzoic acid in sulphur dioxide is added to a slurry of SO3 and nitrosyl sulphuric acid in sulphur dioxide with cooling to prevent the temperature rising above -30 DEG C. and then the temperature is allowed to rise slowly up to about 40 DEG C. and thereafter reaction is completed at about 80 DEG C. Alternatively, a solution of SO3 in sulphur dioxide may be added to a slurry of hexahydrobenzoic acid and nitrosyl sulphuric acid in sulphur dioxide. In another example methyl hexahydrobenzoate is used. The recovery of the lactam by neutralisation and solvent extraction is described in detail.
Patent GB-1427613-A (GB)
Title: Continuous process for preparing aluminium fluoride
IPC: C01B33/18
Filed: 1973-05-29
Abstract: 1427613 Preparation of aluminium fluoride DERIVADOS DEL FLUOR SA 29 May 1973 [26 May 1972 8 May 1973] 25510/73 Heading C1A A continuous process of preparing aluminium fluoride comprises continuously feeding fluosilicic acid and material comprising alumina and/or alumina hydrate to the first of a cascade of reactors to form a reaction mixture, the fluosilicic acid fed to the first reactor having a concentration of 5-25% by weight and a temperature of 60-95‹ C., the reaction mixture flowing through the cascade of reactors and reacting to yield a suspension of insoluble silica hydrate in a solution of an aluminium fluoride, the reaction mixture in the reactors being maintained at or above 90‹ C., the reaction time being 5-60 minutes, the suspension flowing from the last reaction having a pH of 1-3; separating the silica hydrate from the suspension which flows from the last reactor of the cascade; feeding the solution of α-aluminium fluoride from which the silica hydrate has been separated to a cascade of crystallizers; and continuously converting the α-aluminium fluoride to insoluble #-aluminium fluoride by maintaining the α-aluminium fluoride at a temperature in the range of 80-100‹ C. for 4-8 hours in the cascade of crystallizers.
Patent GB-355514-A (GB)
Title: Improvements in door bolts and the like
IPC: E05C1/04
Filed: 1930-08-27
Abstract: 355,514. Bolt fastenings. HOPKINS, C. Y. and CARTLAND & SON, Ltd., J., Armoury Close, Bordesley Green, Birming- ham. Aug. 27, 1930, No. 25527. [Class 44.] A bolt barrel has a spring tongue a, the free end of which co-operates with a groove or grooves and shoulder c on a bolt d to prevent withdrawal of the bolt from the barrel, to hold the bolt in its shot and withdrawn positions, and prevent rattling. The tongue may be integral with the barrel as shown, or formed separately and secured by rivets &c., the free end extending through a slot in the barrel into contact with the bolt. The bolt shown separate in Fig. 8 has a groove b with tapering surface g engaged frictionally by the tongue end. In an alternative form, Fig. 9, two grooves b are provided, with inclined surfaces e, e<1>, e<2>, and respectively holding the bolt against accidental movement from its shot and withdrawn positions. In both forms the shoulder c prevents removal of the bolt from the barrel.
Patent GB-1272216-A (GB)
Title: Personal listening apparatus
Inventor: MILLAR CHARLES
IPC: H04R1/10
Filed: 1968-05-28
Abstract: 1,272,216. Stethoscopes. CROW HAMILTON & CO. Ltd. 25 July, 1969 [28 May, 1968], No, 25534/68. Heading A5R. [Also in Division H4] Personal listening apparatus includes a junction piece 15 havig an inlet 14 and two outlets 16, 17 each leading to a passage 18, 19 for feeding sound to an earpiece 21, 22. An adjustable volume control is in the form of a member 25 actuated between the outlets 16, 17 and arranged progressively to enter the inlet 14. Foam plastics material in the region 29 of entry of the member 25 damps sound waves in accordance with its degree of deformation. The junction piece 15 is of polypropylene and the earpieces 22, 23 and tubes 11, 18 and 19 are of plastics material. The tubes 18, 19 may be shaped by heat treatment to suit the individual.
Patent GB-826560-A (GB)
Title: Method of making contacts to semiconductor bodies
IPC: H01L21/24
Filed: 1956-08-21
Abstract: 826,560. Semi-conductor devices. GENERAL ELECTRIC CO. Aug. 21, 1956 [Aug. 23,1955], No. 25537/56. Class 37. [Also in Group II] An electrical contact to a monocrystalline semi - conductor body is made by placing some contact material in a pool of etching solution on the surface of the body and heating so that when all the solution has evaporated, the two etched surfaces are alloyed together. The arrangement avoids any tendency of the newly etched surfaces to oxidize. Fig. 1 shows a block of silicon 1 with a pool 2 of etching solution such as '' CP4 " or a mixture of nitric and hydrofluoric acids or HF alone and flakes 4 of the contact material. The contact material may consist of tin, or of donor materials such as arsenic, phosphorus or antimony preferably alloyed with, say 98% of indium to lower the melting-point, or of acceptor materials such as boron, aluminium or gallium alloyed with 98% of indium or indium alone. The whole is heated to between 390‹ and 450‹ C. for 10 minutes in a reducing atmosphere such as hydrogen, dry carbon monoxide or methane, until the solution has evaporated. Surplus flakes of the contact material which have not alloyed with the semiconductor may be scraped off. Germanium may be used in place of silicon. Specification 826,559 is referred to.
Patent GB-763657-A (GB)
Title: A method of and means for scouring wool by the solvent degreasing process
Inventor: SINCLAIR JACK FREDERICK
IPC: D01B3/08
Filed: 1954-09-02
Abstract: <PICT:0763657/III/1> <PICT:0763657/III/2> Raw wool is scoured by spraying a high volume of wool-wax solvent at a high pressure on to a swab of wool carried by a perforated conveyer so as to have mechanical as well as solvent action, and subsequently spraying a high volume of water at a high pressure on to the wool, still carried by a conveyer.  To prevent undue movement of the wool on the conveyers the latter are highly porous, preferably with at least 20 apertures per linear inch. In a suitable plant, a primary conveyer 6, a secondary conveyer 7, crush rolls 8-11, feed conveyers 12, 13 and an intermediate conveyer 14 are all mounted in a casing 5, the conveyers 6, 7 travelling about rollers 15, 16, 17 respectively. Wool is fed into the plant through a shoot 19 on to the conveyer 6, where it is sprayed with solvent from a primary jet header 21 and a secondary jet header 22.  The wool is then fed through the crush rolls 8, 9 and, by means of conveyer 14, then delivered to the conveyer 7, where it is sprayed with water from similar jet headers 21, 22.  From the crush rolls 10, 11 the wool is finally delivered on a conveyer 20 for drying.  The jet headers are similar and each comprises end members and side members with longitudinal supports 25, Fig. 3, and bottom plates 26, 27 secured to the end and side members in spaced arrangement to form slots 34 therebetween.  A cover 30 with inlet 31 and baffle 32 is also provided.  Deflectors 29 fixed to the bottom plates or secured to adjustable transverse rods 33 are also preferably provided.  As shown, an inclined jet of liquid alternates with a direct jet. The liquid from each header, after drainage to collector 37 for sludge removal, may be recirculated to the same header. Australian Specification 140,734 is referred to.
Patent GB-884062-A (GB)
Title: Improvements in or relating to power supply devices
Inventor: WILLIAMS CYRIL GEORGE
IPC: G05F1/52
Filed: 1958-08-08
Abstract: 884,062. Automatic voltage-control systems. INTERNATIONAL COMPUTERS & TABULATORS Ltd. July 22, 1959 [Aug. 8, 1958], No. 25592/58. Class 38 (4). An automatic voltage stabilizer of the series valve type supplying cold-cathode gas tubes has an auxiliary control so that it can be switched from a normal supply to a supply of reversed polarity to rapidly switch the tubes. The series regulating valve 1 is normally controlled by a cascode amplifier 8, 9 so as to stabilize the voltage on line 16 at a level determined by a tapping 17 on a potentential divider 13 connected between line 16 and a stable source of negative polarity on line 7. The valve 1 can also be controlled by the rectified output of an oscillator 23. The oscillator is normally biased to cut off but on application of a positive pulse to line 47 oscillation commences, conduction of valve 1 is reduced and the potential of line 16 falls towards that of line 7 so that valves 8, 9 cut off. When line 16 has fallen below a voltage tapped off a second potential divider 42, valve 37 conducts, and via a cathode follower 39 controls the H.T. supply to the oscillator 23 to control the bias on valve 1 so as to maintain the potential of line 16 constant at its lower value.
Patent GB-407087-A (GB)
Title: Improvements in vacuum tubes for ultra-short wave signalling
IPC: H01J25/72
Filed: 1932-09-15
Abstract: 407,087. Thermionic valves. INTER. NATIONAL COMMUNICATIONS LABORATORIES, Inc., 200, Mount Pleasant Avenue, Newark, New Jersey, U.S.A., and CLAVIER, A. G., 46, Avenue de Breteuil, Paris. Sept. 15, 1932, No. 25668. [Class 39 (i).] In an ultra-short wave generator having a cathode 2, a reflecting electrode 4, and an electrode 3 in which oscillations are set up by movements of electrons, switching means are provided for short-circuiting a part or parts 31 of the oscillating electrode so that its length may be adjusted to the operating wave-length. The parts 31 may be short-circuited by switches 10, 16 and the whole or the middle of the electrode may be connected in circuit by means of switches 11, 17. The length of the oscillating electrode is adjusted to be equal to the longest working wave-length, and also equal to 1.25 times the shortest working wave-length. In a modification the oscillating electrode consists of a helix having the turns more closely spaced at the ends than at the centre. The design of such generators is treated mathematically in the Specification. Specifications 392,043 and 405,331 are referred to.
Patent GB-1320652-A (GB)
Title: Fire alarm systems
IPC: G08B25/04
Filed: 1971-04-19
Abstract: 1320652 Fire alarms NITTAN CO Ltd 19 April 1971 [31 March 1970 (2)] 25724/71 Headings G4H and G4N A fire detector for use in a fire alarm system includes means for sensing heat or smoke and an electromechanical filter which is put in a ready condition in response to the sensing of heat or smoke by the sensing means. In Fig. 2, a plurality of fire detectors 10-1, 10-2 ... are connected by common lines 1, 2, 3 to a central station 11. In a detector, e.g. 10-1, a smoke detector has ionization chambers 19, 20 respectively closed and open to the ambient air, detection of smoke increasing the conduction of FET 27. Sufficient conduction causes Zener diode 29 to render SCR 30 conducting thereby providing a D.C. short across lines 1, 2 and permitting a tuning-fork filter 18 to pass its characteristic frequency (different for each detector) from lines 1, 2 to line 3. The central station 11 has a relay 12 which responds to the D.C. shorting to energize a lamp 15 and audible alarm 16. A frequency generator 35 applies a continuously varying frequency to lines 1, 2, and when the characteristic frequency of an actuated detector is reached, a swing appears on a voltmeter 37 fed via a rectifier 36 from line 3. Modifications of the filter are shown, including one giving an audible alarm at the detector, driven by the tuning fork. In Fig. 7, a plurality of fire detectors 10-1 .... 10-n are connected by common lines 1, 2 to a central station 11, the far ends of the lines 1, 2 being linked via a highpass filter 42. In a detector e.g. 10-1, if a bimetallic plate 53 detects fire it rises from the dotted to the full-line position thereby closing contacts 56, 57 to D.C. shunt lines 1, 2, and raising block 59 to release tuning fork 32 forming a filter connected in line 1 and having a different pass frequency in each detector. At the central station 11, the D.C. shunt, via low-pass filter 43 and relay 12, energize lamp 15 and audible alarm 16. A generator 35 applies a varying frequency to lines 1, 2 and when the pass frequency of a released tuning fork is reached, this frequency is passed at the tuning fork and via a high-pass filter 44 to light a lamp 37 corresponding to the frequency currently being generated (and thus the detector). An audible alarm is also given at the detector, driven by the released tuning fork, at 62-65. A modification uses a separate generator for each required frequency, the frequencies being passed to line 1 via a chopper, any frequency received back being passed by one of a bank of band-pass filters to a respective rectifier and lamp to identify the detector. (For Figure see next column)